Straight line interpolation shall be permitted for intermediate spans and design values.
Timber floor joist span tables.
View joist rafter tables.
Joist and rafter span tables.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Engineered wood products ewp span and size charts for bci joists.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Joist span table for floor joists floor joist span tables for various sizes and species of wood joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2.
These span tables assume installation of at least three joists or rafters that are spaced not more than 24 on center.
These tables can also be used to determine deck joist span.